Dietary Supplement. Free from amino acids. TwinLab L-Arginine & L-Ornithine Capsules are easier to swallow and assimilate. Well tolerated by most highly allergic individuals. No tablet binders, coating or colorings. Free of most common allergens such as corn, yeast, rice, barley, wheat, lactose (milk sugar) and all milk, citrus, fish and egg products. No added flavorings, artificial sweeteners, colorings or preservatives. Packaged in a glass bottle for maximum stability, quality and freshness. This product is manufactured at our own state of the art facility. L-Arginine and L-Ornithine are amino acids. www.twinlab.com.